Fix due to Niels. Fixes things like 	select '', id from tables; Before this would result in a table with a single row of which the first column was "" and the second NULL.
Fix due to Niels.
Fixes things like
	select '', id from tables;
Before this would result in a table with a single row of which the
first column was "" and the second NULL.

zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb